Raymundo, who worked as a contract vendor, was charged March 28 with two counts of voyeurism after a months-long investigation.

The documents say another Microsoft vendor employee discovered a camera on a foot path while walking on On July 24, 2013. The man found videos on the camera were taken while pointed up women’s skirts or dresses.

Investigators were able to track Raymundo through his Microsoft key card in August of 2013.

“He disclosed that he had been visiting ‘upskirting’ websites for the past year and admitted to taking ‘upskirting’ images on the Microsoft Redmond campus,” Officer Katelyn McGinnis wrote in a probable cause document. “Raymundo conceded that a review of his assigned Microsoft computer would reveal visits to voyeurism websites.”

Police received a search warrant, and found 86 videos on his camera and computer with images captured up the skirt or dress of the female victims.

“In the videos, I noted that Raymundo employs the use of stairs, escalators or checkout lines as an excuse to be within close range of the female victims without arousing their suspicion,” McGinnis wrote.

Police say the videos show Raymundo’s face nearly 50 times.

Raymundo is expected to be arraigned April 10, where he’ll enter a plea.